Before you go you have to buy
This Book,
The Complete Guide to Motorcycling Colorado: The Definitive Reference for ALL the Best Roads, Rides, and Tips, written by one of our forum members, Steve Farson.
You won't find a more comprehensive book by someone who has been there, done that, taken the pictures and tells it like it is. Even if you didn't ride a motorcycle, it is full of interesting information about Colorado.
If you want to see some examples, search on the forum for "sfarson" and you will find many ride reports with pics.
I can not say enough about what a wonderful resource this book is for anyone going to Colorado.
And, like a previous poster, the SW corner of Colorado is a riders paradise. We've stayed at the Comfort Inn in Ouray many times and they take good care of us. Lots of riders stay there. If you go, say HI to Betty for me. She and her husband own the place.
And just for fun, here is a picture from that area.
That is Telluride in the distance from the top of Black Bear Pass. My ridding buddy and I call that place "Pucker Point" as there is a 90 degree right hand turn right where the road goes out of sight and you have to make it or else. We watched riders get off and walk their bike down past the turn.
Here is another picture of Pucker Point from a different perspective giving a better idea of what it is really like.
Enjoy your trip!